Minetest/VoxeLibre
2
0
Fork 0
mirror of https://git.minetest.land/VoxeLibre/VoxeLibre.git synced 2024-11-16 16:11:06 +01:00
Code Issues Projects Releases Packages Wiki Activity

Speed up TGA encoding by creating fewer strings

Browse source
This commit is contained in:
Nils Dagsson Moskopp 2021-11-04 15:15:28 +01:00 committed by Elias Fleckenstein
parent 23ca11c8e1
commit 4926c0560d
No known key found for this signature in database
GPG key ID: 06927A5199D6C9B2
1 changed files with 4 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
mods/CORE/tga_encoder/init.lua
View file

@ -47,13 +47,13 @@ function image:encode_data()
local current_pixel = ''
local previous_pixel = ''
local count = 1
local encoded = ''
local packets = {}
local rle_packet = ''
for _, row in ipairs(self.pixels) do
for _, pixel in ipairs(row) do
current_pixel = string.char(pixel[3], pixel[2], pixel[1])
if current_pixel ~= previous_pixel or count == 128 then
encoded = encoded .. rle_packet
packets[#packets +1] = rle_packet
count = 1
previous_pixel = current_pixel
else
@ -62,7 +62,8 @@ function image:encode_data()
rle_packet = string.char(128 + count - 1) .. current_pixel
end
end
self.data = self.data .. encoded .. rle_packet
packets[#packets +1] = rle_packet
self.data = self.data .. table.concat(packets)
end
function image:encode_footer()